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Altera_Forum's avatar
Altera_Forum
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15 years ago

DMA-controller doesn't generate an interrupt after changing the transaction type once

Hello, I realized that the dma-controller doesn't generate an interrupt the first time after I change the transaction type without resetting the core. But the transaction is done normally. ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

I just had another Problem. The system froze. That happens because of an dma buffer overflow. This happend after a transfer type change.

So I think we can conclude the dma controller doesn't work like the user exspects after reading the user guide.

Not changing the transfer type helps but is not always a solution. Resetting the dma controller works, too but reduces throughput and will not help if that's the bottleneck.

So ALTERA, please fix this issue. Those error produce a lot of idle power.

Regards,

Frederik